Well, i bought these the two Orics on ebay and got a huge refund, so i really spent only a handful of bucks for them. I think, that i should try to repair this beautiful minis.
I'll check the 7905 voltages soon.
And no Chema, it's not a stupid question ... all your help is welcome.
@All:
One of the power supplies i tried is this one:
http://www.leicke.eu/de/products/NT03092
9V with 2A. This should be a good one.
I tried to shorten the pins 1 and 40 of the cpu, but all i got is a minimal different noise. The Orics wants to reset, but the screen is always the same.
And yes, the ULA should be ok and i hope the 6502A CPU works too.
Hm ... maybe it is the 6522 VIA.
I bought a Saleae Logic Analyzer and i'm still waiting for the clamps. But i don't know anything about measuring with this Saleae thing.
Another question ... is it possible to "piggy back" an other 6502 over the old one?